Is their an decisive instrument to seize rid of mice and rats? I have have a problem with these rodents for years in...

I have have a problem with these rodents for years in a minute. We were getting them (big rats) surrounded by the trailer all the time. We found out where on earth they were coming surrounded by and covered the holes. We haven't had any inside for a long while in a minute. We have found babies departed in the patio. One of the babies got into the house and luckily I looked up to see what my cat be doing and he was trying to carry him. Luckily he was small adequate to kill near a fly swapper. I am terrified of the things. I hold 6 cats and mice and rats still don't stay away. the exterminator won't spray for them since I have cats.
Answers:    I have an idea that it is time to move.
Place moth balls lower than trailor and any other place such as in walls you can. You may smell them slighly a few days but it will fade. Check within closets for cracks, they can get surrounded by and out very small spaces. Use that spray foam crack sealer, its great. Usually they are looking for wet if food sources are beoing controled, so check for water leak also. Pick up pet food over night as darkness time is when they roam the most. *mamatx